HF 2.0 16v bigger turbo

helllo guys! i was wondering if i install a bigger turbo on my delta.. a t04 how much lag will i be facing ??? on which rpm will i enter boost ?? any info is appreciated! i know that a t3/t4 is much better!.. But i want a t04 thats why i am asking!!

In this engine tuning guide/article I’ll explain how to make very powerful and rugged Italian 2 liter 4 cylinder 16 valve turbocharged engine found on very famous cars like Lancia Delta integrale, Alfa Romeo 155 Q4, Fiat Coupe 16VT and some more.